Subsectional phylogeny is mostly unresolved. Lists of species (from the flora area) within each subsection are provided here as a rough guide to relationships
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flora). Subgenus Rosa includes seven sections, all represented in the flora area, five only by introduced species. None. Rosa sect. Bracteatae, Rosa sect
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locule; style standing away from stamens and staminode, petal-like; stigmatic area shaped as marginal callosity; style, stamen, and staminodes basally connate
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maps of the Lemnaceae show the area where the species once was collected and do not represent the actual distribution area, which might be considerably smaller
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traditionally in Lindernia (including three of those occurring in the flora area) were found to be included within segregated genera. In addition to the molecular
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Arnott (8 genera, ca. 240 species), in which all the genera in the flora area are placed, and the woody, mostly tropical Hugonoideae Reveal. Based on molecular
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Grossulariaceae are now placed in separate families. Of the genera native in the flora area, Itea is placed in Iteaceae, characterized by spirally-arranged serrate leaves
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Calloideae, which include four of the seven native genera found in the flora area, are the basal clades within Araceae. Plants in these subfamilies possess
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(seed collar) or, rarely (in O. brandegeei), filled with large, spongy cells, area above raphe a translucent membrane, surface papillose, reticulate, or irregularly
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Pavonia. Of the two, only Pavonia, with dry fruits, occurs within the flora area. Morphological variation within Malvaviscus has led to proposals of more
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colder regions and perhaps in the open in frost-free areas; it is not naturalized in the flora area. Another South American species, A. striatum Dickson
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may escape locally elsewhere but might not become naturalized in the flora area, because the cultivated form is sterile, although pieces of the plant root
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entire to notched or erose-tipped, with or without subapical thickened dark area. Staminate flowers sessile, white or whitish; stamens 2–8, much exceeding
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coarsely rugose and reticulate, thickened, especially at distal end, this area with an internal cavity adjacent to embryo. 2n = 14, 28, 42, 56. w, c United
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because of hybridization; more than 100 named hybrids occur in the flora area. Hybrids among the blue-flowered, acaulescent species in eastern North America
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popular garden ornamentals. Many non-native irises may be found in the flora area, not only in specialized gardens, but in casual plantings and persisting
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or eglandular. Two species of Cistaceae have been collected in the flora area as waifs. Helianthemum nummularium Miller is known from Colorado, Missouri
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habitats, with limited temperate representation. Taxa of Lythraceae in the flora area range in elevation from coastal plain to mid montane. Elevational ranges
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yellowish, plane, apex 2-cleft [entire], sometimes clawed, 3-6 mm; nectariferous area sometimes present; stamens 20-110; filaments filiform [flattened]; staminodes
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mm. Phyllaries apically spreading to reflexed, oblong, apices with green area 1–2 mm, faces prominently stipitate-glandular (at least apically). Ray florets
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